Ulmer, Mari Privette
Columbine Books, 1998
Buku Teks
Edited by Catherine Suyak Alloway
The Scarecrow Press, Inc., 1990
Buku Teks
Gurton, Annie
Prentice-Hall, 1998
Buku Teks
Richard, Paul
Omiwa Jinsha Press, 1976
Koleksi Publik
Wellington House, 1996
Buku Teks